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      Yokogawa ALR121-S00 S1
      Yokogawa ALR121-S00 S1
      Yokogawa ALR121-S00 S1
      Yokogawa ALR121-S00 S1
      Yokogawa ALR121-S00 S1
      Yokogawa ALR121-S00 S1

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      In Stock
      Serial Communication Modules

      ALR121-S00 S1

      Spare Part Number

      PNALR121-S00

      Product Information:

      Serial Communication Modules

      used with a safety control station

      (SCS) for performing Modbus

      communication

      Product image is representative; revision or series may vary. Contact us to request a specific version.
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      • One-year warranty
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      Technical specifications for

      ALR121-S00 S1

      0 TECHNICAL PARAMETERS
      • Manufacturer:
        Yokogawa
      • Product Category:
        Safety Automation
      • Spare Part Number:
        ALR121-S00
      • Estimated shipping dimensions:
        3.2x14.1x13cm
      • Weight:
        0.3 kg
      • Tariff Code:
        8537101190
      • Country of origin:
        Japan
      • Place of shipment:
        Xiamen, Fujian, China
      • Interface:
        RS-422/RS-485 (4-wire system)
      • Connection method:
        Point-to-point (RS-422) Multipoint (RS-485)
      • Transmission speed:
        1200/2400/4800/9600/19200/38400 bps
      • Stop bit length:
        1/2 bits
      • Transmission distance:
        Maximum 1200 m (total extended length)
      • Current consumption:
        0.5 A
      • Wiring connection:
        Clamped with terminal block’s M4 screws (5 poles × 2 ports)
      • Character length:
        8 bits
      • Series:
        Yokogawa ProSafe-PLC
      • Stock:
        20
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      • 03

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      Alternative Names

      ALR121S00 ALR121 S00

      Manuals

      PRODUCT & ORDER FAQS

      Questions buyers ask about ALR121-S00 S1

      • What critical safety-system function does ALR121-S00 S1 perform within the Yokogawa ProSafe-PLC architecture?

        The ALR121-S00 S1 operates as a safety-rated logic and interface component designed to support high-integrity alarm handling and safety signal processing within ProSafe-PLC environments.

      • How does ALR121-S00 S1 integrate into the ProSafe-PLC system topology while preserving deterministic safety execution?

        The ALR121-S00 S1 is architected for seamless backplane and system bus integration, ensuring deterministic logic execution and synchronized safety communication across redundant controller domains.

      • Which functional safety principles are inherently implemented by ALR121-S00 S1 to achieve high safety integrity levels?

        The ALR121-S00 S1 employs redundancy management, continuous self-diagnostics, and fail-safe design methodologies aligned with IEC 61508 and IEC 61511 safety lifecycle requirements.

      • How does ALR121-S00 S1 maintain alarm accuracy and response reliability under abnormal process conditions?

        Through robust signal validation, priority-based alarm processing, and fault-tolerant logic structures, the ALR121-S00 S1 ensures precise and timely alarm annunciation.

      • What diagnostic and proof-test facilitation capabilities are embedded within ALR121-S00 S1?

        The ALR121-S00 S1 supports extensive self-monitoring and diagnostic feedback mechanisms that simplify proof testing, fault identification, and maintenance planning.

      • What environmental and operational conditions define the certified deployment envelope of ALR121-S00 S1?

        The ALR121-S00 S1 is specified for industrial temperature, humidity, and vibration ranges consistent with ProSafe-PLC system requirements, ensuring reliable performance in harsh process environments.

      • Which high-risk industrial sectors derive the greatest safety and compliance value from deploying ALR121-S00 S1?

        The ALR121-S00 S1 is ideally suited for oil & gas, chemical processing, refining, and power generation industries where rigorous functional safety and alarm management are mission-critical.
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          Moore Disclaimer: Moore Automated's sales automation equipment and related solutions are intended for industrial automation and business operational efficiency improvement purposes only. Product information, technical parameters, and application cases are for reference only and do not constitute an absolute guarantee of performance for any specific industry, scenario, or final application. Actual equipment performance may vary depending on factors such as the usage environment, system integration method, and maintenance conditions. Users should confirm compatibility and safety based on professional technical assessments. Moore Automated assumes no liability for any direct or indirect losses caused by improper use, modification, or failure to operate according to specifications, to the extent permitted by law.

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